Titanium 6-7 vs. R30001 Cobalt

Titanium 6-7 belongs to the titanium alloys classification, while R30001 cobalt belongs to the cobalt alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is titanium 6-7 and the bottom bar is R30001 cobalt.

Titanium 6-7 (R56700)UNS R30001 Co-Cr-W Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		220

Elongation at Break, %		11
Elongation at Break, %		1.0

Poisson's Ratio		0.33
Poisson's Ratio		0.28

Shear Modulus, GPa		45
Shear Modulus, GPa		86

Tensile Strength: Ultimate (UTS), MPa		1020
Tensile Strength: Ultimate (UTS), MPa		620

Thermal Properties

Latent Heat of Fusion, J/g		410
Latent Heat of Fusion, J/g		310

Melting Completion (Liquidus), °C		1700
Melting Completion (Liquidus), °C		1530

Melting Onset (Solidus), °C		1650
Melting Onset (Solidus), °C		1260

Specific Heat Capacity, J/kg-K		520
Specific Heat Capacity, J/kg-K		430

Thermal Expansion, µm/m-K		9.3
Thermal Expansion, µm/m-K		11

Otherwise Unclassified Properties

Density, g/cm³		5.1
Density, g/cm³		9.0

Embodied Carbon, kg CO₂/kg material		34
Embodied Carbon, kg CO₂/kg material		8.9

Embodied Energy, MJ/kg		540
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		190
Embodied Water, L/kg		460

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		32
Stiffness to Weight: Bending, points		22

Strength to Weight: Axial, points		56
Strength to Weight: Axial, points		19

Strength to Weight: Bending, points		44
Strength to Weight: Bending, points		18

Thermal Shock Resistance, points		66
Thermal Shock Resistance, points		19

Alloy Composition

Aluminum (Al), %		5.5 to 6.5
Aluminum (Al), %		0

Carbon (C), %		0 to 0.080
Carbon (C), %		2.0 to 3.0

Chromium (Cr), %		0
Chromium (Cr), %		28 to 32

Cobalt (Co), %		0
Cobalt (Co), %		43 to 59

Hydrogen (H), %		0 to 0.0090
Hydrogen (H), %		0

Iron (Fe), %		0 to 0.25
Iron (Fe), %		0 to 3.0

Molybdenum (Mo), %		6.5 to 7.5
Molybdenum (Mo), %		0 to 1.0

Nickel (Ni), %		0
Nickel (Ni), %		0 to 3.0

Niobium (Nb), %		6.5 to 7.5
Niobium (Nb), %		0

Nitrogen (N), %		0 to 0.050
Nitrogen (N), %		0

Oxygen (O), %		0 to 0.2
Oxygen (O), %		0

Silicon (Si), %		0
Silicon (Si), %		0 to 2.0

Tantalum (Ta), %		0 to 0.5
Tantalum (Ta), %		0

Titanium (Ti), %		84.9 to 88
Titanium (Ti), %		0

Tungsten (W), %		0
Tungsten (W), %		11 to 13